Hanger



March 3, 1931. I KAVANAGH 1,794,519

HANGER Filed Dec. 11. 1928 2 Sheets-Sheet 1 JAMES F KAVANAGH INVENTOR.

' BY aflm A TTORNE Y.

Vlarch 3, 1931. J. KAVANAGH 1,794,519

HANGER Filed Dec. 11, 1928 Sheets-Sheet 2 JAMES E KAVANAGH INVENTOR.

ATTORNEY.

Patented Mar. 3, 1931 4: and 5 andwhieh/deliver to the drum 0 f mm;STATES PATENT OFFICE f JAMES F, KAVANAGH, OF CLIFESIDE; NEW gss ussmnonTo THE suPERHEA ER comrnnxornnweyonx, N. Y.

HANGER Applicatien filed December 11, 1928. Serial no. 325,258. Y

My invention relates to hangers designed to provide a support for a bodysuspended fronia tubular. structure, and has particular reference to thesuspensionpf auxiliary equipment from water-tube boilers and likeapparatus such as pipe stills, etc'. p

The invention is particularly. suitable for use as a support" forasuperheater located in the interdeck position in a water-tube boiler andwilllbe described as applied to such an installation, although it is tobe understood" that it is equally applicable to similar apparatususedfor other purposes.

"In the accompanying drawings in which lhave illustrated preferred formsof apparatusembodyingtlie invention, Fig-1 1s a fragmentary elevation-ofa standard type oi crossrdrum water-tube boiler and super heater inwhichfthe invention is employed; Fig. 2 is a frag mentary section on anenlarged scale takenralong the line of 22 of Fig. 1; Figs. 3,4and 5 arefragmentary sections showing other devices embodylng the invention, andFigs. 5', 6. and 7 are frag- 4 mentary elevations of thehangers respec-Referring now to Fig; 1, the conventional- 1 ly illustrated boilercomprises the usual spaced banks of parallel generating tubes ,1 and 2inclined to the horizontal and which are'supplied with waterfrom thesteam and water drum 3 by means of nippled headers through headers 6and7and circulators 8.

-The products. of 'combustion;'fro-m the chamber 9 are causedito passtransversely over the generating tubes by bafiles lOqa'nd 11,1jeavingthe boiler through the breech u 'ing12.;

The superheater, of known form, is l0-. cated in the space between thebanks of tubes 1 and 2- and comprises transversely ,CllSPOSEd inlet andoutlet headers 13and 14 connected by a plurality of superheater elementsl'a;

-- The upper bank of generating .tubes21'n a boiler of this characterare ordinarilyfarranged in the manner shown more clearly n Fig.2, thatis, withthe several tube rows vertically ofi'set or staggered As will beapparent from Fig.1, the'location of the superout distortion.

heater between the tube banks presents serious problem with respect'tosupport, par- .ticularlyas regards the superheater elements 15 which aredisposed. long tudinally of the" boiler. The. weight of these elementsand of the superheater headers is such that it is impractical to supportthem'from the horizontal row ofboiler tubes immediately above them, ,assuch an arrangement would place a greater bending'stress; upon thesetubes than" theyare capable of withstanding with- ,Numerous methods" ofsupporting a superheater have been suggested heretofore, but all of themethods; heretofore suggested involve the use of supports independent ofthe boi-lerfstructure; which, in -addition to add- .ing to the expense10f; the installation, are for other reasons not entirely satisfactory.

The present invention provides animproved form of support in which theboiler tube structure is used as thesupporting medium' and in which theload thereon is .so distributed "that no undue stress is imposed on anyof the tubes which carry the supported load? Aisillustrated in Fig. 2,the support for the superheater elements comprisesone or moretransversely placed beams l6from which depend the rods 17, the latterbeing provided with heads 18 adapted to be inserted in :suitablerecesses in the beams 16 tovv detachably securethe rods to the beams.Rods 17 are provided with extendedcurved arms 19 adapted to receivetheindividual loops of the elements 15. So much of the supportingstructureas has been soifar described is not novel. I

. According to the present invention, the

beams 16 are supported by .means of hangers the thickness of which issuch that they may when thehangerafter insertion between the tube rowsis turned through an angle of 909 to thejposition shown in Fig. 2, eachrecess 21 20 which arein the-form of-flat metal plates 7 will engage aportion of the circumference of one of the boiler tubes. As shown inFig. 6, the recesses 21 are preferably sloped to c011- rather than in asta term with the angle of inclination of the boiler tubes.

At the :lower end the hangers may be i iiade in any desired forihinorder to provide-asuitable connection between them and the body orbodies which they support. Inthe form illustiit'tedfthelower' eiidofth'efliaiigerisfpro vided with a pair of holes eats-rough whichtransverse supporting pins 23 engaging the beams 16 are passed.

By reference to Fig. 2;itv will jbe :quit-e obvious that the loadimposed by the support of beams 16 is, through the medium of the haner-S 20, distributed over "a re-measl large 'iiu 'iiber of tubes. It:will further be evideiit'thatiafterhaviiig'been placed'in position, theliang'ei'sQO are securel locked in place but at the saine ti-ine'b'ythereinoi' 'al of the connecting nieaiis they may be readilyreinoved b'y*inerely turning them through "an angle (if 90 and sliding them outthrough the "inter tubespace,

The load'on'thehangersinsuresa solid con-,

tact at all times between the hanger member and th'ejttibe's', which Iin turn insures an "ef- 'fic'ien't tr'ansfe'r hf heat'jfrgrn -the hngers to the water-cooled mites, thereby I preventing the overheatingaiid buriii'ii ofthe hangers. Moreover, this "construction is"particularly advantageous in supporting "a istruture "extendingaei-essarelatgive ly widebankot'tiibes "siichfas iseii'ip loyed'in largepower-boilers, as 'the number oflihngerseiiiployed transversely of theboiler may "be as gi'e'at as is desired, thereby 'reducingthe spanbetween {points of su port on thebeam's'lG and'cofiseque'iitly reduciiigthe "siZ'e of the beam section required to resist the bending stressimposed by the eibseiyseacea weight-carrying seas a This feati'ii e'isparti'cii'l'arl'y desirable'in connection "with the support-(italictransversely positioned s'uperheateiheaders which ordinarily extendtliroughfthe side "walls of the boiler settingand are supported at theireiidsthereby, but which in thecase of wide boilers i'equii'eadditio'i'ial support interinedi ate theirends.

"InFi-g. 3 the haHg'erQOa fu'notionssubstaiitially in the same manner"as'the hanger but is in a form adapted to be used in connectioirw'ithbanksof tubes'Qa' in which the tubes are placedi'n verticallyparallel'rows gered relation.

Fig. 4: illustrates a form of hanger 20b adapted Zto be teed "with thesaine tiib'e arrangeme'iifia's is shown iii Fig. 2, but in which'reeeseessib are provided iii only oiie side of 'thehang'er. Thisjforin,"however, preferably "in akes ooi' tact fwith the tube rowsonboth sides whereof, as iii' the form shown in Figs.

Qaiid 3'; r i v w r 'Inthe form shown in Figshand 7, the

hanger 200 consists of a plate which is bent to form a series ofconnected hooks and which when in position makes contact with the tuberow at but one side of the hanger. Because of the depth of the hooksnecessary to secure adequate engagement with the tubes, the hangercannot be inserted or removed from the tube banks when in the positionshown i ithe figure and mustbe turiied through an angleoi' 909 forremoval, as in the manner necessary f'orthe removal oi the other formsotlhanger shown. As will be clear from Fig. 6, the width of the hangeris such that when turned through an. angle of it can be removed tuberows.

In the forms shown in 'Figs. 2 to 4, the hanger is held against lateralmoveinent'by Contact with'tiibes on either side thereof, while in Fig. 5the hanger supported by the tubes against l'itGlill'lllOtlOIl in onedirectioiioii'ly. It will thereforebe obvious'that this latter -formisapplicable only in cases where the-load thereon is directly verticaland the member or members supported tliereby are not 'tree'to movetransversely. 'I'cla'im: v

1, The combination with a boiler comprising a plurality ofspaced'ban'ks'of tubes'arrangedin'horizbntal rows,'the tubes in the:

banks being. parallel and inclined-to the hori- Zoiit'al, of asuperheater located in the space betweens'aid tube baiiks and aplurality of 'liangers "for supporting said superheater, eachofsaidlrang'ersbeing. in'ia vertical plane and comprising an element supportedby tubes in a Jplur'ality of the boiler tube 'ro'ws above'saidsuperheater 'tlIlCl'llEtVlllg tube en- 'gaging surfaces slopedconformably to the inclination of'theboiler tubes.

2. The combination with a boiler coinpris- 'iiig atubeb'ankformedbyinclined-wows of tubes, the tubes} in the bank being:palialll land iiiclin'e'd'tothehorizontal, of a superheatersuspendedfrom "said bank, transverseb'e'ams below saidbaiikrforrsupporting the superheater, and a:plurality of'lialigelsdetach'ably secured to said-'beaiiis,eacli or said hangers I lying in avertical plane I and being adapted to be inserted between the adjacenttube rows 'in' said bank and being provided with a plurality of recessesadapted to engage a plurality of tubes in said "adjacent tube rows uponrotation of the hangerabout its longitudinal axis, said'recesses havingtube engaging surfaces sloped coiifo'rmably to the inclination of theboiler tubes.

3; The combination with 'a bank of tubes comprising "a plurality ofspaced rows and in'-"wl1ich the tubes areapa rallel, and each inclinedto the horizontah'of means for supporting the-'weightof a'suspended bodycoinprising a inetal hanger lying in a vertical plane and having:plurality of recesses therein and adapted't'o bexinserted betweenthrough the space between adjacent adjacent tube rows and afterinsertion to be turned to bring said recesses into engagement with aplurality of said tubes, said recesses having tube engaging surfacessloped conformably to the inclination of the tubes.

4. The combination with a boiler comprising a bank of tubes arranged inhorizontal rows, the tubes in the bank being parallel and inclined tothe horizontal, of a plurality of hangers for supporting a bodysuspended below'the bank, each hanger comprising a fiat elementextending in a vertical plane between two adjacent rows of tubes andengaging a plurality of tubes in each of said two rows, the tubeengaging surfaces being in the opposite edges of said flat element andbeing sloped conformably to the inclination of the tubes, whereby theengaging surfaces are large enough so that relatively. few hangers areneeded and those engaging only a few tubes each. 7 r

JAMES F. KAVANAGH.

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